Vehicle liftgate



FIG. 1 is a perspective view of a vehicle liftgate, showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left side elevation view thereof, with the right side elevation view being a mirror image of the left side elevation view; and,

FIG. 4 is a top plan view thereof.

The broken lines in the drawing views are included for the purpose of illustrating unclaimed environment only, and forms no part of the claimed design. 

CLAIM The ornamental design for a vehicle liftgate, as shown and described. 